I had a '76 280Z with independant rear.That thing would not launch in a straight line to save it's own butt.You never knew which way it was gonna go when you dumped the clutch.

At least with the way the Mustangs are now you know they are gonna go straight unless the road is wet.The '84 GT that I had would swap ends in a heartbeat if you pulled out to hard in first gear on a wet road.

I have not seen any good pictures of the 2015 yet either. IRS is an answer to all the car tester rags that pick on the Mustang for using archaic technology in the for of a live axle. Persoanlly I am not a fan of IRS as My 03 Cobra, GTO's, 5th Gen Camamro's are overly suseptible to violent wheel hop which gets worse as the power goes up. If the NVH guys would put in harder durometer bushings to quell the hop and the eventual breakage it might be worth while.

I've never had a problem w/ the cars I've had w/ IRS ('96 BMW M3, Cadillac STS, a couple older Mercedes) but I'm not a drag racer, more into good handling.

So this should be a big improvement. As good as the '12-13 Boss 302 was at handling, I would expect the new car w/ IRS to be even better...it's still over a year away until launch, so more information should be coming late in the year...

It might work if they don't make them as stiff as the '90s Cougars and Thunderbirds. The Cougars were awful! My mother owns a '95 and I've never seen a car that was so stiff! Any twist at all and one of the rear tires will literally lift off of the ground. If you turned into a driveway or onto a street that had very much of a grade to it, it would spin the tire that lifted no matter how easily you tried to take off. Sometimes, it would completely lift one rear tire and it would just stop going. You would have to let it roll back until the tire touched back down and get a run at the turn. I can see the advantage of an IRS on a road course car. But, for an every day driver, I don't see the big advantage and personally wouldn't have one. I seriously doubt that any IRS would be as durable as a solid axle.

I still don't see what's so big about having the inferior rear suspension over some variation of solid axle.......outside of looking more high tech. If you looks at External Explosion's XJ-R GRM 2012 Jeep Cherokee or Petty Cash Racing's #430 Jeep Cherokee 24 Hours of Lemons and Chump Car racer. They've both been top finishers and while 2wd, they have 2 solid axles regularly out perform what should have been faster cars with those trucks!

What have they done to the Mustang!That looks like something made by an electric car designer. He must have said "Lets get a car with a legendary reputation as a nice looking car and smear that on the ground.We can make it look like it's turning into a hatchback, put HUGE flares on the wheelwells, and make the front end look like the new ford hybrids!" I really like the look of the 08-13 Mustangs, you could see where the roots of it's design came from, now they have just killed it.

What have they done to the Mustang!That looks like something made by an electric car designer. He must have said "Lets get a car with a legendary reputation as a nice looking car and smear that on the ground.We can make it look like it's turning into a hatchback, put HUGE flares on the wheelwells, and make the front end look like the new ford hybrids!" I really like the look of the 08-13 Mustangs, you could see where the roots of it's design came from, now they have just killed it.

Exactly, you would have thought that they would have learned not to change the Mustangs after the Mustang 2. I personally think it looks like a mix of Aston Martin and Bugatti.

It has an IRS w/ a transverse spring. The Mustang is the only RWD car left on the US market (or in the world, probably) w/ a solid rear axle. Every other performance or sports car uses an IRS.

Right! And the reason they still use a solid axle has nothing to do with the "benefits" of one. It's all about keeping the Mustang's price down. That is the bottom line as to why they've held onto that ancient technology for so long.

You can't take any of the pictures on the internet currently seriously....those are just someone's thought about what it could look like, nothing official has been shown...it probably won't be shown for real until at least the LA auto show this winter...

It has an IRS w/ a transverse spring. The Mustang is the only RWD car left on the US market (or in the world, probably) w/ a solid rear axle. Every other performance or sports car uses an IRS.

Yeah I know that, Harry was just saying how finally the Mustang is getting rid of the "ancient" solid axle, yet the Corvette still uses an "ancient" leaf spring (albeit it being transverse rather than longitudinal) while still being able to handle just as well as cars costing twice as much.